X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fcgroup-util.h;h=a65f515b4558ecbccdd583eb32d6aa848591b4e6;hb=b5884878a2874447b2a9f07f324a7cd909d96d48;hp=37e4255a9c4dc1b47470057a64a986d886a7160a;hpb=77d47be64f8b0497c44a4288f2531fc1056624ae;p=elogind.git diff --git a/src/shared/cgroup-util.h b/src/shared/cgroup-util.h index 37e4255a9..a65f515b4 100644 --- a/src/shared/cgroup-util.h +++ b/src/shared/cgroup-util.h @@ -1,7 +1,6 @@ /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ -#ifndef foocgrouputilhfoo -#define foocgrouputilhfoo +#pragma once /*** This file is part of systemd. @@ -9,16 +8,16 @@ Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. + Lesser General Public License for more details. - You should have received a copy of the GNU General Public License + You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see . ***/ @@ -29,8 +28,32 @@ #include "set.h" #include "def.h" +/* A bit mask of well known cgroup controllers */ +typedef enum CGroupControllerMask { + CGROUP_CPU = 1, + CGROUP_CPUACCT = 2, + CGROUP_BLKIO = 4, + CGROUP_MEMORY = 8, + CGROUP_DEVICE = 16, + _CGROUP_CONTROLLER_MASK_ALL = 31 +} CGroupControllerMask; + +/* + * General rules: + * + * We accept named hierarchies in the syntax "foo" and "name=foo". + * + * We expect that named hierarchies do not conflict in name with a + * kernel hierarchy, modulo the "name=" prefix. + * + * We always generate "normalized" controller names, i.e. without the + * "name=" prefix. + * + * We require absolute cgroup paths. When returning, we will always + * generate paths with multiple adjacent / removed. + */ + int cg_enumerate_processes(const char *controller, const char *path, FILE **_f); -int cg_enumerate_tasks(const char *controller, const char *path, FILE **_f); int cg_read_pid(FILE *f, pid_t *_pid); int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d); @@ -38,35 +61,74 @@ int cg_read_subgroup(DIR *d, char **fn); int cg_kill(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, Set *s); int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool remove, Set *s); -int cg_kill_recursive_and_wait(const char *controller, const char *path, bool remove); -int cg_migrate(const char *controller, const char *from, const char *to, bool ignore_self); -int cg_migrate_recursive(const char *controller, const char *from, const char *to, bool ignore_self, bool remove); +int cg_migrate(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self); +int cg_migrate_recursive(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool remove); +int cg_migrate_recursive_fallback(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool rem); int cg_split_spec(const char *spec, char **controller, char **path); -int cg_join_spec(const char *controller, const char *path, char **spec); -int cg_fix_path(const char *path, char **result); +int cg_mangle_path(const char *path, char **result); int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs); -int cg_get_by_pid(const char *controller, pid_t pid, char **path); +int cg_get_path_and_check(const char *controller, const char *path, const char *suffix, char **fs); + +int cg_pid_get_path(const char *controller, pid_t pid, char **path); int cg_trim(const char *controller, const char *path, bool delete_root); -int cg_rmdir(const char *controller, const char *path, bool honour_sticky); +int cg_rmdir(const char *controller, const char *path); int cg_delete(const char *controller, const char *path); int cg_create(const char *controller, const char *path); int cg_attach(const char *controller, const char *path, pid_t pid); +int cg_attach_fallback(const char *controller, const char *path, pid_t pid); int cg_create_and_attach(const char *controller, const char *path, pid_t pid); +int cg_set_attribute(const char *controller, const char *path, const char *attribute, const char *value); + int cg_set_group_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid); -int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid, int sticky); +int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid); int cg_install_release_agent(const char *controller, const char *agent); +int cg_uninstall_release_agent(const char *controller); int cg_is_empty(const char *controller, const char *path, bool ignore_self); int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self); -int cg_get_user_path(char **path); +int cg_get_root_path(char **path); + +int cg_path_get_session(const char *path, char **session); +int cg_path_get_owner_uid(const char *path, uid_t *uid); +int cg_path_get_unit(const char *path, char **unit); +int cg_path_get_user_unit(const char *path, char **unit); +int cg_path_get_machine_name(const char *path, char **machine); +int cg_path_get_slice(const char *path, char **slice); + +int cg_shift_path(const char *cgroup, const char *cached_root, const char **shifted); +int cg_pid_get_path_shifted(pid_t pid, const char *cached_root, char **cgroup); + +int cg_pid_get_session(pid_t pid, char **session); +int cg_pid_get_owner_uid(pid_t pid, uid_t *uid); +int cg_pid_get_unit(pid_t pid, char **unit); +int cg_pid_get_user_unit(pid_t pid, char **unit); +int cg_pid_get_machine_name(pid_t pid, char **machine); +int cg_pid_get_slice(pid_t pid, char **slice); + +int cg_path_decode_unit(const char *cgroup, char **unit); + +char *cg_escape(const char *p); +char *cg_unescape(const char *p) _pure_; + +bool cg_controller_is_valid(const char *p, bool allow_named); + +int cg_slice_to_path(const char *unit, char **ret); + +typedef const char* (*cg_migrate_callback_t)(CGroupControllerMask mask, void *userdata); + +int cg_create_everywhere(CGroupControllerMask supported, CGroupControllerMask mask, const char *path); +int cg_attach_everywhere(CGroupControllerMask supported, const char *path, pid_t pid); +int cg_attach_many_everywhere(CGroupControllerMask supported, const char *path, Set* pids); +int cg_migrate_everywhere(CGroupControllerMask supported, const char *from, const char *to, cg_migrate_callback_t callback, void *userdata); +int cg_trim_everywhere(CGroupControllerMask supported, const char *path, bool delete_root); -#endif +CGroupControllerMask cg_mask_supported(void);